Is it water, oil cooled or a combo of both ?
barrysharp
Re: Turbocharger cooling (cschmelz)
actually, it depends on the design of the turbo. My holset (and most are) is only OIL cooled. Its a DIESEL turbo, runs in boost almost the entire time the truck is in motion and ussualy go hundreds of thousands of miles on the same turbo.
All in all, let the car idle down for a couple minutes after driving for either setup will go leaps and bounds for turbo life. Consider installing a turbotimer, they sure are handy (though annoying to explain to the people you parked next to).
| Quote, originally posted by cschmelz » |
| I thought we had discussed this previously, that modern Volvo turbos are so reliable because they are water cooled (oil would carry away a little heat as well) but most of the sinking was from water... |
actually, it depends on the design of the turbo. My holset (and most are) is only OIL cooled. Its a DIESEL turbo, runs in boost almost the entire time the truck is in motion and ussualy go hundreds of thousands of miles on the same turbo.
All in all, let the car idle down for a couple minutes after driving for either setup will go leaps and bounds for turbo life. Consider installing a turbotimer, they sure are handy (though annoying to explain to the people you parked next to).
Re: Turbocharger cooling (doug242ti)
Hard to explain to my wife. Her family has been Volvo turbo killers in the past (ol' 245T was abused), so I tell her to idle for 15-30 seconds when she's done. Seems to be fine with that, now if I can just get her to stop opening the car door into abrasive objects. There should be an optional 3M kit for edge of car door.
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| Quote, originally posted by doug242ti » |
| All in all, let the car idle down for a couple minutes after driving for either setup will go leaps and bounds for turbo life. Consider installing a turbotimer, they sure are handy (though annoying to explain to the people you parked next to). |
Hard to explain to my wife. Her family has been Volvo turbo killers in the past (ol' 245T was abused), so I tell her to idle for 15-30 seconds when she's done. Seems to be fine with that, now if I can just get her to stop opening the car door into abrasive objects. There should be an optional 3M kit for edge of car door.
Re: Turbocharger cooling (doug242ti)
Doug, would you say this applies to all driving instances? or only after spirited/hard driving sessions and/or hot weather. SOrry for what might be a basic question, but i'm a turbo newbie...in fact I steered clear of them until the R by virtue of turbocharging's prior history.
| Quote, originally posted by doug242ti » |
All in all, let the car idle down for a couple minutes after driving for either setup will go leaps and bounds for turbo life. |
Doug, would you say this applies to all driving instances? or only after spirited/hard driving sessions and/or hot weather. SOrry for what might be a basic question, but i'm a turbo newbie...in fact I steered clear of them until the R by virtue of turbocharging's prior history.
Re: Turbocharger cooling (icebiker)
I would say 15-30 seconds after a decent freeway drive would good. After a SPIRITED drive ussualy you need 3-4 minutes of cooling (or more).
| Quote, originally posted by icebiker » |
Doug, would you say this applies to all driving instances? or only after spirited/hard driving sessions and/or hot weather. SOrry for what might be a basic question, but i'm a turbo newbie...in fact I steered clear of them until the R by virtue of turbocharging's prior history. |
I would say 15-30 seconds after a decent freeway drive would good. After a SPIRITED drive ussualy you need 3-4 minutes of cooling (or more).
Re: Turbocharger cooling (barrysharp)
Modern OEM gasoline engine turbo assemblies usually have water jackets in the center section to avoid coking of the bearing. Some, like the older Audi S4, include an after-run electric water pump to circulate coolant through the turbos even after you've shut off the engine and walked away from the vehicle. A neat feature, I think.
Aftermarket add-on turbo kits do not usually have water cooling, presumably due to plumbing complexity.
Diesel turbos do not use water cooling because exhaust gas temps are lower and coking is less of an issue.
Marine engines (gas or diesel) water cool the center section AND the turbine housing AND the exhaust manifolds because hot surfaces are a safety concern in the engine bay.
All of my turbo cars, including my current 850, have had water-cooled center sections. I assume all current Volvos do, too.
Modern OEM gasoline engine turbo assemblies usually have water jackets in the center section to avoid coking of the bearing. Some, like the older Audi S4, include an after-run electric water pump to circulate coolant through the turbos even after you've shut off the engine and walked away from the vehicle. A neat feature, I think.
Aftermarket add-on turbo kits do not usually have water cooling, presumably due to plumbing complexity.
Diesel turbos do not use water cooling because exhaust gas temps are lower and coking is less of an issue.
Marine engines (gas or diesel) water cool the center section AND the turbine housing AND the exhaust manifolds because hot surfaces are a safety concern in the engine bay.
All of my turbo cars, including my current 850, have had water-cooled center sections. I assume all current Volvos do, too.
Re: (doug242ti)
How about idle? WOT?
A Holset, huh? Looks like it works well for you! From a Cummins B, perhaps?
| Quote, originally posted by doug242ti » |
| Dyno Im not sure what your thinking but almost EVERY BRAND new turbo/kit is set up for water cooling. The turbo's can be run with out water through them, but they are set up for it. I guess I've never seen anybody take advantage of that feature. Makes sense that it's there, though. My diesels run the same EGT's as my 242 going down the road too. |
How about idle? WOT?
A Holset, huh? Looks like it works well for you! From a Cummins B, perhaps?
Re: Turbocharger cooling (24Hours)
I guess we should remember this when on the race track. As a rule, we just came off the track, lined up to go back on and then shut down and openned the hoods to cool down. Depending on where you were on the track when the flag was displayed to end that session, you could be less than a minute from shutting down.
This is all in referance to the track time at Watkins Glen.
I guess we should remember this when on the race track. As a rule, we just came off the track, lined up to go back on and then shut down and openned the hoods to cool down. Depending on where you were on the track when the flag was displayed to end that session, you could be less than a minute from shutting down.
This is all in referance to the track time at Watkins Glen.
Re: (Dyno)
my WOTS are hotter, but idle and driving around town (and freeway cruising) are about the same. With in about 1-200*'s at any given point.
Its an HY35W off a 2k4 dodge cummins HO ;-)
| Quote, originally posted by Dyno » |
How about idle? WOT? A Holset, huh? Looks like it works well for you! From a Cummins B, perhaps? |
my WOTS are hotter, but idle and driving around town (and freeway cruising) are about the same. With in about 1-200*'s at any given point.
Its an HY35W off a 2k4 dodge cummins HO ;-)
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